<?php // This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. /** * Unit tests for qtype_calculated_variable_substituter. * * @package qtype * @subpackage calculated * @copyright 2011 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); global $CFG; require_once($CFG->dirroot . '/question/type/calculated/question.php'); require_once($CFG->dirroot . '/question/type/calculated/questiontype.php'); /** * Unit tests for {@link qtype_calculated_variable_substituter}. * * @copyright 2011 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class qtype_calculated_variable_substituter_test extends advanced_testcase { public function test_simple_expression() { $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); $this->assertEquals(3, $vs->calculate('{a} + {b}')); } public function test_simple_expression_negatives() { $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => -2), '.'); $this->assertEquals(1, $vs->calculate('{a}-{b}')); }< /** < * @expectedException moodle_exception < */public function test_cannot_use_nonnumbers() {> $this->expectException(moodle_exception::class);$vs = new qtype_calculated_variable_substituter(array('a' => 'frog', 'b' => -2), '.'); }< /** < * @expectedException moodle_exception < */public function test_invalid_expression() { $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');> $this->expectException(moodle_exception::class);$vs->calculate('{a} + {b}?'); }< /** < * @expectedException moodle_exception < */public function test_tricky_invalid_expression() { $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');> $this->expectException(moodle_exception::class);$vs->calculate('{a}{b}'); // Have to make sure this does not just evaluate to 12. }< /** < * @expectedException moodle_exception < */public function test_division_by_zero_expression() { if (intval(PHP_VERSION) < 7) { $this->markTestSkipped('Division by zero triggers a PHP warning before PHP 7.'); } $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 0), '.');> $this->expectException(moodle_exception::class);$vs->calculate('{a} / {b}'); } public function test_replace_expressions_in_text_simple_var() { $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); $this->assertEquals('1 + 2', $vs->replace_expressions_in_text('{a} + {b}')); } public function test_replace_expressions_in_confusing_text() { $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); $this->assertEquals("(1) 1\n(2) 2", $vs->replace_expressions_in_text("(1) {a}\n(2) {b}")); } public function test_replace_expressions_in_text_formula() { $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); $this->assertEquals('= 3', $vs->replace_expressions_in_text('= {={a} + {b}}')); } public function test_expression_has_unmapped_placeholder() { $this->expectException('moodle_exception'); $this->expectExceptionMessage(get_string('illegalformulasyntax', 'qtype_calculated', '{c}')); $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); $vs->calculate('{c} - {a} + {b}'); } public function test_replace_expressions_in_text_negative() { $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), '.'); $this->assertEquals('temperatures -1 and 2', $vs->replace_expressions_in_text('temperatures {a} and {b}')); } public function test_replace_expressions_in_text_commas_for_decimals() { $vs = new qtype_calculated_variable_substituter( array('phi' => 1.61803399, 'pi' => 3.14159265), ','); $this->assertEquals('phi (1,61803399) + pi (3,14159265) = 4,75962664', $vs->replace_expressions_in_text('phi ({phi}) + pi ({pi}) = {={phi} + {pi}}')); } public function test_format_float_dot() { $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), '.'); $this->assertSame('0.12345', $vs->format_float(0.12345)); $this->assertSame('0', $vs->format_float(0.12345, 0, 1)); $this->assertSame('0.12', $vs->format_float(0.12345, 2, 1)); $this->assertSame('0.1235', $vs->format_float(0.12345, 4, 1)); $this->assertSame('0.12', $vs->format_float(0.12345, 2, 2)); $this->assertSame('0.0012', $vs->format_float(0.0012345, 4, 1)); } public function test_format_float_comma() { $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), ','); $this->assertSame('0,12345', $vs->format_float(0.12345)); $this->assertSame('0', $vs->format_float(0.12345, 0, 1)); $this->assertSame('0,12', $vs->format_float(0.12345, 2, 1)); $this->assertSame('0,1235', $vs->format_float(0.12345, 4, 1)); $this->assertSame('0,12', $vs->format_float(0.12345, 2, 2)); $this->assertSame('0,0012', $vs->format_float(0.0012345, 4, 1));> } } > } > public function test_format_float_nan_inf() { > $vs = new qtype_calculated_variable_substituter([ ], '.'); > > $this->assertSame('NAN', $vs->format_float(NAN)); > $this->assertSame('INF', $vs->format_float(INF)); > $this->assertSame('-INF', $vs->format_float(-INF));